Spiral tool driver



Aug. 11, 1953 R. CORELLA 2,648,364

SPIRAL TOOL DRIVER Filed Oct. 22, 1951 Roy Care/la INVEN TOR.

BY l V Patented Aug. 11, 1953 UNITED STATES PATENT OFFICE 2 Claims.

The present invention relates to new and useful improvements in speediools of a type employing the use of a spirally grooved shaft with ahandle movable longitudinally of the shaft and carrying a part engagedin the groove to translate the reciprocating motion from the handle to arotary motion of the shaft, and the primary object of the invention isto provide an improved means for quickly releasing the drivingengagement between the handle and shaft to permit movement of the handlewithout turning the shaft.

Another object of the invention is to provide a mechanism of thischaracter of a more simple and practical construction, which isefficient and reliable in operation, relatively inexpensive tomanufacture and otherwise well adapted for the purposes for which thesame is intended.

Other objects and advantages reside in the details of construction andoperation as more fully hereinafter described and claimed, referencebeing had to the accompanying drawings forming part hereof, wherein likenumerals refer to like parts throughout, and in which:

Figure 1 is a side elevational view;

Figure 2 is an enlarged vertical sectional view of the device, on line2-2 of Fig. 3, a fragment of the spirally grooved shaft being shown inelevation; and

Figure 3 is a transverse sectional view taken on a line 3--3 of Figure2.

Referring now to the drawing in detail, wherein for the purpose ofillustration I have disclosed a preferred embodiment of the invention,the numeral 5 designates a shaft having a spiral groove 5 therein andprovided at one end with a socket I for attaching a ratchet type wrenchor other suitable tool (not shown) thereto while the other end of theshaft 8 is constructed for interchangeably attaching Wrench sockets 9 ofdifferent sizes thereto.

A sleeve I5 is positioned on the shaft for sliding forwardly andbackwardly thereon, the sleeve being welded or otherwise suitably fixedto a handle II. The end of the handle adjacent the sleeve is formed witha longitudinal bore I2 in Which a driving pin I3 is slidable through anopening I4 in the sleeve to enter the groove 6 of the shaft. The pin I3is normally held in a retracted position by a coil spring I5 positionedin the bore l2 and bearing against the flange It on the pin.

The rear end of pin I3 is engaged by a trigger H which is pivotedadjacent one end on a pin I8 positioned transversely in a notch I9formed in one edge of the handle I I.

In the operation of the tool the driving pin I3 is normally held in itsretracted position by the coil spring I5, which also holds the triggerI'I projecting outwardly at one side of the handle, as shown in Figure 2of the drawing. Sleeve I0 and handle II are then free to slidelongitudinally on shaft 5 to position the handle at either end of theshaft.

Inward pressure on trigger I! will project pin I3 through opening M ofsleeve I I] to enter the groove 6 of shaft b whereby the longitudinalmovement of the handle along the shaft will cause the shaft to rotateand thus drive a tool connected to one end of the shaft.

In view of the foregoing description taken in conjunction with theaccompanying drawings it is believed that a clear understanding of thede vice will be quite apparent to those skilled in this art. A moredetailed description is accordingly deemed unnecessary.

It is to be understood, however, that even though there is herein shownand described a preferred embodiment of the invention the same issusceptible to certain changes fully comprehended by the spirit of theinvention as herein described and the scope of the appended claims,

Having described the invention, What is claimed as new is:

1. A tool comprising a spirally grooved shaft, a sleeve slidable on theshaft, a handle fixed to the sleeve, there being a bore through the sideof said sleeve and extending into said handle, a driving pin slidablycarried in said bore for movement into and out of engagement in thegroove of the shaft to rotate the shaft upon a sliding movement of thehandle, spring means retracting the pin from said groove, and meanspivoted to the handle for projecting the pin into said groove.

2. A tool comprising a spirally grooved shaft, a sleeve slidable on theshaft, an elongated handle one end of which is fixed to the sleeve,there being a bore through the side of said sleeve and leading into saidhandle, a driving pin in said bore slidably carried by the handle formovement into and out of engagement in the groove of the shaft to rotatethe shaft upon a sliding movement of the handle, spring means retractingthe pin, and a trigger pivoted at one side of the handle and engagingthe pin to project the latter into said groove.

ROY CORELLA.

References Cited in the file of this patent UNITED STATES PATENTS NumberName Date 339,277 Doolittle Apr. 6, 1886 532,145 Defatsch Jan. 8, 1895722,332 Stump Mar. 10, 1903

